45073993 has 2 divisors, whose sum is σ = 45073994. Its totient is φ = 45073992.

The previous prime is 45073991. The next prime is 45074011. The reversal of 45073993 is 39937054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44997264 + 76729 = 6708^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 45073993 - 2¹ = 45073991 is a prime.

Together with 45073991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45073991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22536996 + 22536997.

It is an arithmetic number, because the mean of its divisors is an integer number (22536997).

Almost surely, 2^45073993 is an apocalyptic number.

It is an amenable number.

45073993 is a deficient number, since it is larger than the sum of its proper divisors (1).

45073993 is an equidigital number, since it uses as much as digits as its factorization.

45073993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 45073993 is about 6713.7167798471. The cubic root of 45073993 is about 355.8841756987.

The spelling of 45073993 in words is "forty-five million, seventy-three thousand, nine hundred ninety-three".